[rules-users] Problem when using multiple rule files (Drools 5)

[Olaf Raether]

Hey, 

i have a drl file with round about 100 rules. when i run this single file
everything fine !

When i splip the file into two files and add them seperate into the ruleBase 
i get the following Exception
during the inserting of the facts:

java.lang.NullPointerException
at org.drools.base.ClassFieldReader.isNullValue(ClassFieldReader.java:183)
	at
org.drools.base.evaluators.EqualityEvaluatorsDefinition$IntegerEqualEvaluator.evaluate(EqualityEvaluatorsDefinition.java:1482)
	at org.drools.rule.LiteralRestriction.isAllowed(LiteralRestriction.java:92)
	at
org.drools.rule.OrCompositeRestriction.isAllowed(OrCompositeRestriction.java:25)



The code looks  like this:

RuleBase ruleBase = RuleBaseFactory.newRuleBase();
for (int i = 0; i < rules.length; i++) {
       Package pkg = getPackage(i);
       ruleBase.addPackage(pkg);
}	      

for (int i = 0; i < facts.length; i++) {
	Object fact = facts[i];
	workingMemory.insert(fact);   // <<<<< Exception, when multiple rule files
}


Any ideas ?
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